AD 70-23-01
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | 747-100 Series | BOEING Model 747-100 Series Airplanes |
Unsafe Condition
Failures of the spindle nut
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Replace the wing gear upper side strut spindle nut in accordance with Boeing Service Bulletin 32-2055 dated October 2, 1970, or later FAA approved revision, or an equivalent method approved by the Chief, Aircraft Engineering Division, FAA Western Region.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
within the next 200 hours' time in service after the effective date of this ad
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Affected Aircraft
Boeing Model 747-100 Series airplanes certificated in all categories
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Federal Register Abstract
Gear Side Strut Spindle Nut
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_70-23-01.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 70-23-01 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: BOEING Model 747-100 Series Airplanes Subject: Gear Side Strut Spindle Nut Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 11/06/1970 Make: The Boeing Company Model: 747-100 Series Product Type: Aircraft Product Subtype: Large Airplane Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: Updated RGL applicability to match AD applicability; CAR C-11-185 AIRWORTHINESS DIRECTIVES FINAL RULES: 70-23-01 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-1103 AD NUMBER: 70-23-01 SUBJECT HEADING: BOEING Model 747-100 Series Airplanes ACTION: SUMMARY: DATES: Effective November 6, 1970. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 70-23-01 BOEING: Amdt. 39-1103. Applies to Boeing Model 747-100 Series airplanes certificated in all categories. Compliance required within the next 200 hours' time in service after the effective date of this ad, unless already accomplished. To prevent failures of the spindle nut, accomplish the following: Replace the wing gear upper side strut spindle nut in accordance with Boeing Service Bulletin 32-2055 dated October 2, 1970, or later FAA approved revision, or an equivalent method approved by the Chief, Aircraft Engineering Division, FAA Western Region. The amendment becomes effective November 6, 1970. FOOTER:
Document Text
Show stored source text (verify against official source)
AD Final Rules - DRS_70-23-01.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 70-23-01 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: BOEING Model 747-100 Series Airplanes Subject: Gear Side Strut Spindle Nut Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 11/06/1970 Make: The Boeing Company Model: 747-100 Series Product Type: Aircraft Product Subtype: Large Airplane Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: Updated RGL applicability to match AD applicability; CAR C-11-185 AIRWORTHINESS DIRECTIVES FINAL RULES: 70-23-01 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-1103 AD NUMBER: 70-23-01 SUBJECT HEADING: BOEING Model 747-100 Series Airplanes ACTION: SUMMARY: DATES: Effective November 6, 1970. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 70-23-01 BOEING: Amdt. 39-1103. Applies to Boeing Model 747-100 Series airplanes certificated in all categories. Compliance required within the next 200 hours' time in service after the effective date of this ad, unless already accomplished. To prevent failures of the spindle nut, accomplish the following: Replace the wing gear upper side strut spindle nut in accordance with Boeing Service Bulletin 32-2055 dated October 2, 1970, or later FAA approved revision, or an equivalent method approved by the Chief, Aircraft Engineering Division, FAA Western Region. The amendment becomes effective November 6, 1970. FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
This site is not affiliated with or endorsed by the FAA. Always verify with official sources.
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